Submission #513333

#	Time	Username	Problem	Language	Result	Execution time	Memory
513333		8e7	Harvest (JOI20_harvest)	C++17	5 / 100	5078 ms	92564 KiB

harvest

//Challenge: Accepted
#include <bits/stdc++.h>
using namespace std;
void debug(){cout << endl;}
template<class T, class ... U> void debug(T a, U ... b) {cout << a << " ", debug(b...);}
template<class T> void pary(T l, T r) {
	while (l != r) cout << *l << " ", l++;
	cout << endl;
}
#define ll long long
#define maxn 100005
#define pii pair<int, int>
#define ff first
#define ss second
#define io ios_base::sync_with_stdio(0);cin.tie(0);
int a[maxn], b[maxn], to[maxn];
ll dis[maxn], cy[maxn];
bool vis[maxn];
vector<ll> ch[maxn];
pii s[maxn];
int main() {
	io
	int n, m, l, c;
	cin >> n >> m >> l >> c;
	for (int i = 0;i < n;i++) cin >> a[i], s[i] = {a[i], i};
	for (int i = 0;i < m;i++) cin >> b[i];
	sort(s, s + n);
	for (int i = 0;i < n;i++) {
		int pos =((s[i].ff - c)%l + l)%l;
		int ind = upper_bound(s, s + n, make_pair(pos, maxn)) - s - 1;
		if (ind < 0) ind = n - 1;
		to[s[i].ss] = s[ind].ss;
		dis[s[i].ss] = c + (pos - s[ind].ff + l)%l;
	}
	for (int i = 0;i < n;i++) {
		for (int j = 0;j < n;j++) vis[j] = 0;
		int cur = i;
		ll d = 0;
		do {
			vis[cur] = 1;
			d += dis[cur];
			cur = to[cur];
		} while (!vis[cur]);
		if (cur == i) {
			cy[i] = d;
		}
	}
	for (int i = 0;i < m;i++) {
		for (int j = 0;j < n;j++) vis[j] = 0;
		int cur = upper_bound(s, s + n, make_pair(b[i], maxn)) - s - 1;
		if (cur < 0) cur = n - 1;	
		ll d = (b[i] - s[cur].ff + l)%l;
		do {
			ch[cur].push_back(d);
			vis[cur] = 1;
			d += dis[cur];
			cur = to[cur];
		} while (!vis[cur]);
	}
	int q;
	cin >> q;
	for (int i = 0;i < q;i++) {
		ll l, t;
		cin >> l >> t;	
		l--;
		ll ans = 0;
		for (auto x:ch[l]) {
			if (x > t) continue;
			if (cy[l]) {
				ans += (t - x) / cy[l] + 1;	
			} else {
				ans++;
			}
		}
		cout << ans << "\n";
	}
}

• Subtask 1: 5 / 5
• Subtask 2: 0 / 20
• Subtask 3: 0 / 75